Use color generator for nick names

forms/MainWindow.ui

@@ -18,7 +18,7 @@
   </property>
   <property name="minimumSize">
    <size>
-    <width>850</width>
+    <width>950</width>
     <height>600</height>
    </size>
   </property>
@@ -29,7 +29,7 @@
    </font>
   </property>
   <property name="windowTitle">
-   <string notr="true"> Nheko </string>
+   <string notr="true"> nheko </string>
   </property>
   <property name="styleSheet">
    <string notr="true">background-color: #f9f9f9</string>

include/HistoryViewManager.h

@@ -43,7 +43,6 @@ public:
 	static QString chooseRandomColor();
 	static QString getUserColor(const QString &userid);
 	static QMap<QString, QString> NICK_COLORS;
-	static const QList<QString> COLORS;
 
 public slots:
 	void setHistoryView(const RoomInfo &info);

src/HistoryViewManager.cc

@@ -126,38 +126,61 @@ void HistoryViewManager::setHistoryView(const RoomInfo &info)
 
 QMap<QString, QString> HistoryViewManager::NICK_COLORS;
 
-const QList<QString> HistoryViewManager::COLORS({"#FFF46E",
-						 "#A58BFF",
-						 "#50C9BA",
-						 "#9EE6CF",
-						 "#FFDD67",
-						 "#2980B9",
-						 "#FC993C",
-						 "#2772DB",
-						 "#CB8589",
-						 "#DDE8B9",
-						 "#55A44E",
-						 "#A9EEE6",
-						 "#53B759",
-						 "#9E3997",
-						 "#5D89D5",
-						 "#BB86B7",
-						 "#50a0cf",
-						 "#3C989F",
-						 "#5A4592",
-						 "#235e5b",
-						 "#d58247",
-						 "#e0a729",
-						 "#a2b636",
-						 "#4BBE2E"});
-
 QString HistoryViewManager::chooseRandomColor()
 {
 	std::random_device random_device;
 	std::mt19937 engine{random_device()};
-	std::uniform_int_distribution<int> dist(0, HistoryViewManager::COLORS.size() - 1);
+	std::uniform_real_distribution<float> dist(0, 1);
+
+	float hue = dist(engine);
+	float saturation = 0.9;
+	float value = 0.7;
+
+	int hue_i = hue * 6;
+
+	float f = hue * 6 - hue_i;
+
+	float p = value * (1 - saturation);
+	float q = value * (1 - f * saturation);
+	float t = value * (1 - (1 - f) * saturation);
+
+	float r = 0;
+	float g = 0;
+	float b = 0;
+
+	if (hue_i == 0) {
+		r = value;
+		g = t;
+		b = p;
+	} else if (hue_i == 1) {
+		r = q;
+		g = value;
+		b = p;
+	} else if (hue_i == 2) {
+		r = p;
+		g = value;
+		b = t;
+	} else if (hue_i == 3) {
+		r = p;
+		g = q;
+		b = value;
+	} else if (hue_i == 4) {
+		r = t;
+		g = p;
+		b = value;
+	} else if (hue_i == 5) {
+		r = value;
+		g = p;
+		b = q;
+	}
+
+	int ri = r * 256;
+	int gi = g * 256;
+	int bi = b * 256;
+
+	QColor color(ri, gi, bi);
 
-	return HistoryViewManager::COLORS[dist(engine)];
+	return color.name();
 }
 
 QString HistoryViewManager::getUserColor(const QString &userid)

src/LoginPage.cc

@@ -84,8 +84,8 @@ LoginPage::LoginPage(QSharedPointer<MatrixClient> client, QWidget *parent)
 	button_layout_->setContentsMargins(0, 0, 0, 50);
 
 	login_button_ = new RaisedButton("LOGIN", this);
-	login_button_->setBackgroundColor(QColor("#acc7dc"));
-	login_button_->setForegroundColor(QColor("black"));
+	login_button_->setBackgroundColor(QColor("#171919"));
+	login_button_->setForegroundColor(QColor("white"));
 	login_button_->setMinimumSize(350, 65);
 	login_button_->setCursor(QCursor(Qt::PointingHandCursor));
 	login_button_->setFontSize(17);

src/RegisterPage.cc

@@ -99,8 +99,8 @@ RegisterPage::RegisterPage(QSharedPointer<MatrixClient> client, QWidget *parent)
 	error_label_->setStyleSheet("margin-bottom: 20px; color: #E22826; font-size: 11pt;");
 
 	register_button_ = new RaisedButton("REGISTER", this);
-	register_button_->setBackgroundColor(QColor("#acc7dc"));
-	register_button_->setForegroundColor(QColor("black"));
+	register_button_->setBackgroundColor(QColor("#171919"));
+	register_button_->setForegroundColor(QColor("white"));
 	register_button_->setMinimumSize(350, 65);
 	register_button_->setCursor(QCursor(Qt::PointingHandCursor));
 	register_button_->setFontSize(17);

src/WelcomePage.cc

@@ -59,16 +59,16 @@ WelcomePage::WelcomePage(QWidget *parent)
 	button_layout_->setContentsMargins(0, 20, 0, 80);
 
 	register_button_ = new RaisedButton("REGISTER", this);
-	register_button_->setBackgroundColor(QColor("#acc7dc"));
-	register_button_->setForegroundColor(QColor("#171919"));
+	register_button_->setBackgroundColor(QColor("#555459"));
+	register_button_->setForegroundColor(QColor("white"));
 	register_button_->setMinimumSize(240, 60);
 	register_button_->setCursor(QCursor(Qt::PointingHandCursor));
 	register_button_->setFontSize(14);
 	register_button_->setCornerRadius(3);
 
 	login_button_ = new RaisedButton("LOGIN", this);
-	login_button_->setBackgroundColor(QColor("#acc7dc"));
-	login_button_->setForegroundColor(QColor("#171919"));
+	login_button_->setBackgroundColor(QColor("#555459"));
+	login_button_->setForegroundColor(QColor("white"));
 	login_button_->setMinimumSize(240, 60);
 	login_button_->setCursor(QCursor(Qt::PointingHandCursor));
 	login_button_->setFontSize(14);